The naturalistic fallacy is often claimed to be a formal fallacy. It was described and named by British philosopher G. E. Moore in his 1903 book Principia Ethica. Moore stated that a naturalistic fallacy was committed whenever a philosopher attempts to prove a claim about ethics by appealing to a definition of the term "good" in terms of one or more natural properties (such as "pleasant", "more evolved", "desired", etc.).
The naturalistic fallacy...
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The naturalistic fallacy is often claimed to be a formal fallacy. It was described and named by British philosopher G. E. Moore in his 1903 book Principia Ethica. Moore stated that a naturalistic fallacy was committed whenever a philosopher attempts to prove a claim about ethics by appealing to a definition of the term "good" in terms of one or more natural properties (such as "pleasant", "more evolved", "desired", etc.).
The naturalistic fallacy is related to, and often confused with, the is-ought problem (which comes from Hume's Treatise). As a result, the term is sometimes used loosely to describe arguments that claim to draw ethical conclusions from natural facts.
Alternatively, the phrase "naturalistic fallacy" is used to refer to the claim that what is natural is inherently good or right, and that what is unnatural is bad or wrong (see "Appeal to nature"). It is the converse of the moralistic fallacy, or that what is good or right is natural and inherent.
Moore's argument in...
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